View of the Quebrada de Humahuaca form the Ruta Provincial 52, that climbs up to 4200 a.s.l

The Quebrada de Humahuaca is a narrow mountain valley located in the province of Jujuy in northwest Argentina, 1,649 km (1,025 mi) north of Buenos Aires (23°11′59″S 65°20′56″W / 23.19972°S 65.34889°W / -23.19972; -65.34889). It is about 155 km (96 mi) long, oriented north-south, bordered by the Altiplano in the west and north, by the Sub-Andean hills in the east, and by the warm valleys (Valles Templados) in the south.

• http://en.wikipedia.org/wiki/Quebrada de Humahuaca